- Excellent sound insulation performance: Our upgraded polyurethane sound insulation wall panels effectively reduce standing waves and significantly improve sound clarity, making them suitable for a variety of acoustic treatment needs. - Safe and healthy: Made from high quality polyurethane, these panels are odorless, flame retardant, formaldehyde-free, non-toxic, and safe for adults, children, and pets to breathe and touch. - Easy installation: Self-adhesive design requires no additional tools. Apply the panels to walls, doors, windows, or ceilings. If removal is needed, heat with a hair dryer to release the adhesive with no damage to the wall. - Key attributes: material - polyurethane; function - sound insulation; performance - reduces standing waves and enhances clarity; safety - odorless, flame retardant, formaldehyde-free, non-toxic; compatibility - walls, doors, windows, ceilings; installation - self-adhesive. - Practical use scenarios: - Home theater or media room to improve dialogue clarity and reduce echo. - Home office or conference room to minimize background noise and improve speech intelligibility. - Recording studio, practice room, or bedroom to control room ambience and standing waves for better acoustics.